We've already shown you MintyBoost, a battery-powered USB charger built from an Altoids tin;…
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What this little device lacks in creative branding it makes up for in functionality. For $20, you get a standard USB hub that you can plug into your computer for four extra USB jacks; when you're away from your computer, it works as a USB charger that's fueled by the power of the sun (though it can also draw its charging power from your standard wall outlet or car).

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Frankly, we can't imagine any solar-powered charger pumping all that much juice into your portable device, but even if it didn't include the solar-powered component, the USB hub and portable charger is decent. Think of the solar business as delicious icing.